可能发生肿瘤的皮肤会出现溃疡并引发感染。

The skin may develop tumors that can become ulcerated, causing infection.

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表现二是具有与发生肿瘤的原组织不同的形态和机能特性。

Indication two: Having different morphology and functional features from the original histology producing tumor.

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但是，这种更新的技术需要利用病毒将基因转入皮肤细胞，这增加了发生肿瘤的风险。

But the newer technique involves putting genes into the skin cells using viruses, which also raises a risk of cancer.

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